Process of and machine for perforating



Mar. 13, 1923. v 1,448,210

- P. R. GLASS PROCESS AND MACHINE FOR PERFORATING Original Filed 001:. 11, 1919 2 'ShtS-sheet 1 1,448,210 P. RQGLASS v PROCESS OF AND MACHINE FOR PERFORATING Original Filed Oct. 11, 1919 2 sheets-sheet 2 w i I I a -i2;

Fig.2. 157

Patented Mar. 13, 1923.

PEBLEY n. GLASS, or isnoonnrnn,ranssacnusnrrs, ASSIGNOR- r UNITED- SHOE MACHINERY CORPORATION, or PATERSOI-T, new,iiiasnr, A oonronnrron on NEW JERSEY. I

rnooEss or Ann MACHINE FOR- rnnro'nerrno.

Application filed October 11, 1919, Serial No. 329,997. RenewedJuiie 14, 1922. Serial No. 568,238.

To all whom it may concern a citizen of the United States, residing in Brookline, in the county of Norfolk and State of Massachusetts, have invented certain Improvements in Processes of and Met-- chines for Perforating, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in 'the'several figures. This invent-ion relates to' perforating and is herein set forth by way of illustration with special reference to forming an orna- 5, mental row of punch holes or perforations along the margins of pieces of upper leather which are to be used in the manufacture of I boots and shoes. According to a usual practice,'prior to my invention, stock to be perforated is positioned between a flexible nonmetallic backing member, such as a strip of paper, and a punch, the latter being reciprocated to perforate the stock and penetrate the backing strip without coming into contact with whatever support is used beh-ind the backing strip. The paper is fed forward after everypunching and is not used in its other dimensions. While by such practice very satisfactory work may be accomplis'hed, the high cost of the paper backing strip is a considerable item and corresponding disadvantage.

An object of this invention, accordingly, is to reduce the amount of backing material used in performing a given amount of perforating. This I accomplish, for example, by automatically feeding the backing material not only in the direction of its length but also in another direction tran 40 versely to its forward feed movement. Al-

though the transverse feed may, if desired,

be widthwise of the strip, I preferably give it a transverse feed in the direction of its thickness thus utilizing the same portion of the non-metallic backing member to receive a perforating instrument, such as a punch,

at the conclusion of each of a series of perforating operations, the perforating instrument being so manipulated or controlled as to penetrate the backingstrip without passmovements carried out against a given porwhich perforating means is moved relatively to stock positioned against a backing" strip, the backing strip and the per-' forating means being so controlled that at a each of a series of perforating" movements the perforating means penetrates thesame portion of the backing strip withoutpassing entirely therethrough; In the machine which I have illustrated for purposes of exemplification, the punch has a vuniform stroke and the backing strip is moved very several strokes, so as to utili'zeas nearly as is practicable its entire thickness, and is fed transversely to the punch only after almost '1 sition," in case it is desired to punch" drrectly against the'punch block, without in slightly towards the punch after each of" terfering with the operation of the other 3 parts ofthe machine and in the provision of a work support mounted to be readily moved out of the Way whenit is desired to operate upon stock of sucha. shape that the work support is inconvenient.

Another feature of the invention relates" to an improved mechanism for operating upon and feeding the work. bodiinent shown, a stein is mounted to reciprocate in an overhanging arm to cause the punchl'to perforate the work and the punch mounted in "a sl'ideway of the reciprocating stem to move rearwardly for- In the em feeding the work in alineineiit with the overhanging arm.

These and other aspects of the process of my invention, and features of the machine thereof, including certain details of construction and combinations of parts, will 3 be 'describedin connection with an illustrative machine and pointed "out in the appended claims. It is to be distinctly understood,

however, that said illustrated machine is to in thi'ou "h it at each of the erforatino' be consider'ed as disclosed for urioses of s g Q I exemplification and 'that my invention is not intended to. be limited thereto.

Referring to the accompanying draw- 1IlgS Fig. 1 is a side elevation of the machine with certain parts broken away to show certain details of construction;

Fig. 2 is a perspective view with certain parts broken away to show more clearly the construction of the machine;

Fig. 3 is a detail view showing the relation of the work to the punch and the backin strip;

igs 4 and 5 are assembled and disassembled views, respectively, of parts of the backing strip controlling mechanism; and

Fig. 6 is a cross-sectional view through the means for adjusting the work feeding movement of the punch.

The illustrated machine is provided with a main frame 10 in which is suitably journaled a drive shaft 12 provided with a pair of cams 14 and 16 for controlling the work feeding movement and the perforating movement of the perforating tool herein illustrated as a punch 18. Provided with a pair of suitable surfaces engaging cam 16 is a bifurcated lever 20 fulcrumed at 22 to the main frame and pivoted at its upper end to a link 24 connected also with the knuckle 26 of the punch reciprocating toggle 28. The two members of toggle 28 are pivoted at 30 and 32 to the main frame and a suitable part, such as sleeve 34, of the punch reciprocating mechanism, respectively. Suitable bearings 36 and 38 are provided in the forwardly extending portion of the main frame to guide the reciprocation of the punch 18-and the parts of the machine which reciprocate therewith. Adjustably connected to the sleeve 34 is a stem 40 provided at its lower end with a groove forming a slideway 42 in which the punch is reciprocated for work feeding movement in a direction.

at right angles to its perforating movement, as will be hereinafter described. Suitable mechanism may conveniently be provided for adjusting stem 40 with respect to sleeve 34, that shown being substantially in accordance with the disclosure of Patent Number 640,426, granted J an. 2, 1900, to Charles P.

Stanbon, and consisting of a wedge 44 pass-' ing throu h a slot in the stem 40 and adjustable with respect thereto by means of a hand screw 46. Wedge 44 bears also against sleeve 34 with the result that the adjustment of the wedge moves stem 40 relatively to sleeve 34. Stem 40 is provided with a sec ond slot 48 through which passes a pin 50 engaging the upper end of sleeve 34 and adjustably held in contact therewith by spring 52 and a screw 54 threaded into the upper end of stem 40, as clearly shown in cross-section in Fig. 1. It will thus be apparent that the perforating reciprocation of punch 18 can be conveniently adjusted by means of screw 46.

Adjustably connected to the main frame of the machine adjacent the punch 18 is an edge gage 60 and on the side of the punch remote therefrom is shown a presser foot 62 mounted at the lower end of a rod 64 having bearings at 66 and 68 for reciprocating movement in the main frame. Rod 64 is provided at its upper end with a roll 70 engaging a cam surface 72 at the upper end of a lever 74 pivoted at 76 in the main frame and provided at its lower end with a handle 78 by which the presser foot may be raised manually when desired. Slidably engaging a block 80 connected to the knuckle of toggle 28 is a lever 82 fulcrumed also at 76 to the main frame. A screw 84 passes throu h slot 86 in an arm projecting from lever 74 and is threaded in lever 82. (See Fig. 1.) Bearing against this screw 84 is a spring 88 the thrust at the other end of which is taken up by a screw 90 threaded in lever 74. To adjust the normal position of screw 84 with respect to lever 74, there may conveniently be provided a screw 92. It will thus be seen that the'throwing of the toggle 28 will oscillate lever 74 and move cam 72 which is of such a form as to periodically elevate rod 64 to raise the presser foot 62 from work engaging position, the projecting portion of the cam being so arranged that presser foot 62 is held in elevated position while the work feeding movement of punch 18 takes place. As the upper end of lever 74 moves towards the right, as illustrated in Fig. 1, rod 64 and the presser foot move downwardly under the action of gravity.

Engaging cam 14 on the main drive shaft is a bell crank lever pivoted at 102 to the main frame and provided in its upwardly extending arm with a slot 104. Fulcrumed at 106 on the main frame is a lever 108 provided with aslot 110 parallel to slot 104. Passing through slots 104 and 110 and provided with suitable bearing members 111 therein is a rod 112 carried by a link 114 connected at its upper end to a rod 116 adjustable in a slot 118 in the main frame to which it may be clamped by a wing nut 120. The rod 116 may be conveniently provided with a pointer 122, and

adjacent the path of movement of this pointer there is shown a scale 124 to indicate the extent of the work feeding movement of the punch. Pivoted at 126 to lever 108 is a link 128 connected at its other end to a sleeve 130\through which passes a stem 132 guided for horizontal reciprocation at its upper end in the groove formed in the end of the member 40, said stem 132 carrying at its lower end the punch 18. The sleeve 130 is guided for horizontal reciprocation in. a fixed guide on the frame. It will thus be seen that oscillation of bell crank lever relative to the fulcrums 102 and 106 of levers and 108 will, it isapparent, vary the extent of the work feeding movement of the punch.

Mounted on shaft '12 is a skew gear engaging a similar gear 142 mounted on shaft 144 carried horizontally in a bracket 143 adjustably connected to the main frame, as will be hereinafter more fully described, and provided at its forward end with a worm 140 meshing with worm wheel 148 rotatably mounted on a longitudinally movable shaft 149. Formed integral with the upper surface of worm wheel 148 area series of inclined cam surfaces 150 and a corresponding series'of protuberances 151 as clearly shown in Fig. 5, gaging a co-operating series of cam surfaces 152 formed on the lower surface of apunch block carrying member 154, rigid with shaft 149 and carrying punch block 156. Extending radially from member 154 is a series of pins 157, correspondin in number and spacing to the protuberances 151. Shaft 149 is restrained from rotary movement by of a pin and slot connection 158 as shown in Fig. 4. Cam surfaces 150 and 152 are conveniently held in contact by spring 160 bearing against a shoulder near the lower end of shaft 149 and a co-operating shoulder 102 formed in bearing 164 supporting the shaft'149 in the main frame. Between its ends shaft 144 is provided with a pinion 1 meshing with spur gear 172 formed rigid with cam 174and journaled at 176 in an upwardly I extending projection of frame member 148. Oscillatable about a pivot 1'78 is a lever 180 carrying at one end a roll 182 bearing against and moved by cam 174. The other end of lever 180 is curved as clearly shown in Fig. 2 and is provided on its upper surface with a way against which bears a roll 182 mounted in the end. of a pawl 184 pivoted at 186 to a rocking support 188 carried by bracket 143 and to a link 189 connected at its other end to lever 108 and reciprocated thereby. This pawl is provided with a spring 190 tending to hold it in engagement with a ratchet 192. Rigid with ratchet 192 and supported also by the member 188 is one of a pair of bevel gears 194 and 196. the latter of which.

is journaled on an extension of bracket member 143 and is formed rigid with a roll 198. A. roll 200 iscarried by a lever 202 adjustablv fulcrumed adjacent the roll 198 and movable with respect thereto by means of a screw 204. v v

Passing over the punch block 156 is a backnw member illustrated in F1. 3 as a b D the former enstrip of paper-210 passing from a grooved strip holder 21]. between rolls 198 and 200.

and from them through a hollowguide 212 to punching position. i

The main frame of the machine is provided with a guideway 220 in which is a co-operating guide member 222 shown at the lower left hand portion of 2 and formedon the end of the bracket member v143. Members 220 and 222 may be clamped in adjusted position by means of a hand screw 224. It should be noted here that the backing strip feeding and controllingmeans are mounted on and supported by bracket member 143 of the frame with the result that said bracket may be clamped in the oper- "ative position shown in the drawings or it may be moved and clamped in such position that gears 142 and 140 are in non-meshing Y relation on such occasions as it'may badesired to use the machine without utilizing. the backing strip as, for 11181321166, if it 1s desired to perform the punching operation directly against ametal or other suitable punch block without the interposition of the'ba'cking strip. v 1

The machine may conveniently be pro- 'vided with a' work support shown as a table consisting of two parts 280-and pivoted as indicated at 234(see Fig. 2) to the main frame and adapted to support the work as' indicated in Fig. YVhen, however, it is desired to operate upon work, such as a closed vamp; which can not beconveniently supported on a flat surface, the two parts of the work table may be swung about pivots 234 away from one another and from the punch. i p r i In operation, the punch descends to perforate the stock and to partly penetrate the; backing strip and'then. rises slightly out of the backing strip while still in engagement with the stock. The punch is next moved horizontally to feed the stock, then moves vertically and thereafter returns horizontally to its original position. I will now describethe mode of operation of the mechanism' for controlling the position of and feeding the backing strip after the. punch has been'withdrawn from the strip. A supply of paper or other backing material'is carried by the grooved holder 211, passing from there to rolls 198 and 200through guide 212 and over the punch block 156'. Assuming the punch block is in its lowest position. as indicated in Fig. 4, it will be raised slightly as camsurfaces 150 are rotated. The gearing is'so timed. in' the machine illustrated. that the punch block will be raised a distance somewhat less than onefifth of the thickness of the backing strip between each two punching operations,cam

surfaces 150 being moved one twenty-fifth of a revolution, that is one-fifth the length of each cam surface, between consecutive punching operations, until after five punching operations it has been raised a distance almost, but not quite, equal to the thickness of the paper so that if another punching operation were performed against the same portion of the backing strip the punch would come into undesirably close proximity to the punchbloclr. it this time pawl 184i is swung into contact with ratchet 192 through the operation of itsspring this being permitted by the lowering of the left hand end (as viewed in Figs. 1 and 2) of lever 180 and upon the reciprocation of link 189 moves the ratchet a step thus operating roll 198 to feed or push the strip of paper forward preferably just enough to clear the punch holes and present a new backing surface to the punch, While this is taking place, the punch block is held in its elevated position by means of pins 1557 supported by protuberances 151.. Immediately thereafter as cam surfaces 150 are rotated in the direction of the arrow in Fig. 5, shaft M9 snaps back into its lowermost position carrying with it, of course, the punch block 156. It will thus be seen that the punch operates in a uniform path to perform the perforating operations and that the punch block and backing strip are moved a short distance towardsthe punch for each of a series of perforating operations and thereafter the backing strip is moved longitudinally and the punch bloom and backing strip are moved downwardly a dis tance equal to the sum of the preceding upward movements thus leaving the backing strip at its original level ready for a repetition of theforegoing.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. The process of perforatingstock which consists in causing a suitable instrument to perforate a portion of a pi ce of stock positioned against a backing strip and to penetrate the backing strip without passing through it, moving the piece of stock and thereafter causing the instrument to pass through another portion of said piece of stock in such manner as to enter the perforation previously made in the backing strip.

2. The process of perforating stock which consists 'a positioning a portion of stock with the location of a desired perforation against a fibrous backing member, perforating tne stock by a suitable instrument and in the same operation penetrating the backing member, reducing the distance between the instrument and the backing member. positioning an unperforated portion of stock against the previously penetrated portion of the backing member and causing the perforating instrument to perforate the stock as before and to penetrate the backing member to a greater depth than in the preceding op eration to ensure a clean cut perforation.

8. The process of perforating stock which against a backing member, operating a perforating tool through a uniform predetermined path so as to perforate the stock and slightly penetrate the backing member, moving the backing member nearer to the instrument, positioning an unperforated portion of stock with the location of a desired perforation against the previously penetrated portion of the backing member, and operatthe perforating tool so as to perforate the stock and penetrate the backing member to a greater depth than that of the previous penetration.

4:. The process of perforating stock which consists in positioning a portion of stock with the, location of a desired perforation against a backing member, perforating the stock by a suitable instrument and at the same operation penetrating, without passing through, the backing member, reducing the distance between the instrument and the backing member, positioning another portion of said stock with the location of a desired perforation against the, previously penetrated portion of the backing member and causing the instrument to perforate the stock and penetrate the backing member to a greater depth than in the preceding operation but without passing therethrough.

5. The process of perforating stock which consists in causing a suitable instrument to perforate a piece of stock positioned against a backing strip and to penetrate the backing strip, moving the piece of stock a short distance, and operating the perforating instrument so as .to perforate the stock and penetrate the backing strip at the same place as in the previous perforating operation without passing therethrough.

6. The process of perforating stock which consists in causing a suitable instrument to perforate a piece of stock positioned against a backing strip and penetrate the backing strip, moving the stock a short distance and operating the perforating instrument so as to penetrate the backing strip in the same place as in the previous operation and to a greater depth but without passing therethrough.

7. The process of perforating stock which consists in performing a series of stock perforating operations against the same portion of a backing member. moving the backing member and causing the perforating instrument at each perforating movement after the first to penetrate the backing member to a slightly greater depth than at its previous perforation to ensure clean cut perforations.

8. The process of perforating stock which consists in positioning a piece of stock with the location of a desired perforation against the backing strip and alternately perforatso as to produce a rowof perforations there- 1n, the instrument at each perforating movement penetrating the backing strip to a.

slightly greater depth than at previous perforation.

9. The process of perforating stockwhich consists in sequentially positioning portions of a piece of stockbetween and inoperative relation to a backingmember and a'perforating instrument, and causing .a series-of relative movements of. the-backing member and the perforating instrument to form the desired perforations, the relative movements being such that at the'first movement of. a series the perforating instrument penetrates the backing member, and. at each movement after the first of said series the tool penetrates the backing member to adepth greater than it penetrated at thepreceding move ment. 7

10. The process of perforating stock which consists in sequentially positioning portions of stock with thelocations of desired perforations in the stock between and'in operative relation to a backing member and a perforating instrument, causing a series of relative movements of the backing member and the perforating instrument to form the desired perforations, therelative movements being such that at the first movement of a series the perforating instrument penetrates the backing member, and at each movement after the first of said series the perforating instrument penetratesthe backing member to a depth greater .thanthat to which it penetrated at the-preceding movement, and moving the backing member a step transversely tothe direction of said relative movements after each said series of relative movements. i

11. The process of perforating stock which consists in positioning a piece of stock with the location of adesired perforation against a backing strip, repeatedly operating a perforating instrument through a uniform predetermined path so as to perforate I the stock. moving the stock a step forward between successive perforating operations, and moving the backing member a short distance toward the perforating tool between successive perforating operations. Y I

12' The process of perforating stock which consists in positioning a piece ofstock with the location of a, desired perforation against a backing strip, repeatedly operating a perforating instrument through a uniform path so asto repeatedly perforate the stock, moving the stock a step forward between successive perforating operations,

'moving the backing strip ashort distance toward the perfo at n inst ment afte a h of a s r es freta ia ng-eriem en and. moving the backingstrip after the last perforating operation of the series a step longitudinally and a distance away from the perforating tool equal to the sum of its movement towardthe tool, thus leaving thebacking strip in position for a repetition of the foregoing:

13. Ina perforating machine, the combination of a punch, a punchblock, a backing strip supported by the .punch block, means for causing the punch to perforate the work and partly penetrate the backing strip, and means for moving the punch block and the strip in the direction ofthe punch to utilize the thickness of the strip as a backing for a series of perforating :movements of the punch. v I

14. In a perforating machine,theq combination of a punch, a punchblock, abacking strip supported .by the punch block, means for operating the punch toperforate the work and partly penetrate the backing strip, means for movinguthe punch block and the strip in the direction of the punch to utilize the thickness of the strip as a backing fora series of perforating movements of the punch, means for returnin the punch block to its original position after the series of perforating movements of the punch, and means for moving. the backing strip across thexpunch block in readiness for a new'serie's of perforating movements.

15. In aperforating machine, the combination of a punch, a punch block, a backing strip supported by the punch block, means for operating the punch, and automatic means for reducing the distance between the punch block and the punch during series of reciprocating movements of the punch to utilize thethickness of the strip as a backing. i i

16. Ina perforating machine, the combination of a punch, a punch block, a backing strip supported by the punchblock, means a for operating the punch, automatic means for reducing the distance between the punch block and the punch during a series of reciprocatingmovements of the punch toutilize the thickness, of the strip as a backing, and means for moving the backing stripacross the punch block for a new series of perforating movements; of the punch.

17.,11'1' a perforating machine, the combi nation of a punch, a punch block having a backing strip, means for operating the punch, and means, operable during a series of operating movements of the punch for- 18. In a perforating machine, the combination .of a punch, a punch block, a backing strip supported by the punch block, ,means for operating the punch, means, operable the punch block after each series of operating movements of the punch. 19. In a perforating machine, the combination of a perforating tool constructed and arranged to operate against a backing member, and automatic means for reducing the distance between the backing member and the perforating tool during a series of operating movements of the perforating tool to utilize the thickness of the backing member.

20. In a perforating machine, the con'ibination of a backing strip, a perforating tool constructed and arranged to operate against the backing strip, means for operating the perforating tool, and means for moving the backing member towards the perforating tool during a series of operating movements of the perforating tool to utilize the thickness of the backing member.

21. In a perforating machine, the combination of a punch, a punch block, a backing strip, means for feeding the backing strip step-by-step over the punch block, and means for operating the punch and punch-- block to perform a series of successive punching operations without feeding movement of the backing strip after each step of the feeding movement of the backing strip.

22. In a perforating machine, the combination of a punch, a backing strip, automatic means for feeding the backing strip step-by-step, and means for operating the punch to perform a series of successive punching operations against the same portion of the backing strip after each step of the feed thereof.

23. In a perforating machine, the combination of a perforating tool, abacking member against which the perforating tool. operates, and means for moving the backing member towards the tool during a seriesoi.

erforating operations a distance less than. the thickness of the backing member to utilize the thickness of the backing member.

24. In a perforating machine, the combination of a perforating tool for performing a series of perforating movements, 21 backing member against which the perforating tool operates, and means for moving the backing member a short distance towards the tool during each perforating movement of the tool, the total movement of the back ing member during the series of movements of the tool being insufficient to cause the tool to pass through the backing member.

25. In a perforating machine, the combination ofa punch constructed and arranged to operate against a backing strip, a backing strip, feeding means to move relatively the punch and backing strip step-by-step, means to cause a series of relative stock perforating and backing strip penetrating movements of the punch and backing strip after each step of the relative feeding movement of the punch and backing strip, and means to cause the punch to penetrate the backing strip to a sllghtly greater depth at each successive movement of the series.

26. In a perforating machine, the combi nation of a punch, a punch-block, a backing member supported on the punch block,

means for moving the punch block in the direction of the punch to utilize the thickness of the backing member for a series of punching operations, and means thereafter to move the punch-block away from the punch a distance equal to the first movement.

27 In a perforating machine, the combination of a punch, a punch-block, a backing strip, means for moving the punch-block in the direction of the punch to utilize the thickness of the backing member for a series of punching operations, means to there after move the punch-block away from the punch to its original position, and means for feeding the backing strip over the punch block in readiness for a new series of punch ing operations.

28. In a perforating machine, the combination of a backing strip, a punch constructed and arranged to operate against the backing strip, means to feed the strip forward step-by-step and automatic means to move the strip transversely to the direction of its forward movement.

29. In a perforating machine, the combination of a backing member, a perforating tool arranged to operate against the backing member, means to move the tool towards and from the backing member for a series of stock perforating operations, and means, operable during the series of stock perforating operations, to move the backing member towards the tool to utilize the thickness of the backing member.

30. In a perforating machine, the combination of a backing member, a perforating tool constructed and arranged to operate against the backing member, and means to move the backing member a short distance towards the tool for every successive perforating operation to utilize the thickness of the backing member for a series of per forating operations.

31. In a perforating machine, the combi" nation ,of a backing member, a. perforating tool constructed and arranged to operate against the backing member, means to produce a series of equal successive perforating movements of said tool, and means to decrease'thedistance between said tool and.

said backing member between consecutive pairs of a series of successive perforating q movements.

32. In.- a perforating machine, the combination of a backing, strip, apunch constructed and arranged to operate against the backing strip, means to cause a number of series of relative stock-perforating and backing strip-penetrating-ntovements of the punch and backing strip, and means, under the control of the machine, to feed the a strip a step forward after each series of stockperforating and backing strip penetrating movements.

33. In a perforating machine, the combination of abacking strip, a punch constructed and arrangedto operate against the backing-strip, means to feed thestrip forward stp-by-step, means to cause a 1 series of relative stockper-forating and backing-strippenetrating movements of thepun'ch and backing strip between successive feeding movements of'the s-trip, andmeans to cause the punch to penetrate the backing strip to a slightly greater depth at each successive movement of a series.

34;. In a perforating machine, the combination of a back-ingstrip, a punch constructed and arrangedto operateagainst the-backingstrip, means to move the'backing strip a short distance towards the punch for, each of a series of punching operations, and ,mea-ns to move the strip astep forward and to its original distance-from the punch after the last punching operation of said series.

35. In a step-by-s'tep perforatingmachine, the combination of a backing member, a punch operating against the backing member, means to move the backing- 11161111361 step-bystep transverseh to the direction of punching movement ofthe punch, and means to operate the punch tojperform a series of perforating operations'on a piece of stock between said step-by-step movements.

' 86. In a step-by-step perforating machine, the combination of a backing member, a perforating tool operating againstthe backing member, means constructed and arranged to operate the perforating toolto perform a succession of serie'snof perforating operations on a piece of stock, all the perforating operations of the tool in each series be ng "directed againi-it the same portion of the backing member, and mean's tomove the backing membe'r between "the successive series. i l 37. In a perforating machine, the combination of a punch, a backing strip, means constructed and arranged to operate said punch against the backing strip, mechanisnr to" feed and control .the positionof the back ing strip, a bracket for supporting said haech-anism, and means forholdiiig said hlieske ith ts me b n sm out of Qipera said punch operating means in operative condition. g I

I 38. In. aperforating machine, the combr nation of a punch, a punch-block, a backing member and having a cam surface formed thereon, a cam member engagingsaid cam surface, and mechanism for rotating said cam member and moving the punch block to utilize the thickness of the backing strip 7 for a series of punching operations.

40.- In aperforating machine, the combination. of a punch, a punch-block,- means for feeding a backing strip 'thereover, a cam member operatlvely connected to the punchblock, a second cam member having a form complemental to the first and co-operating therewith, and means torotate one of said cam members to transmit a rectilinear movement to-sa-id punch-block.

I 41. Ina perforating machine, the combination of a punch, a punch-block, a pair of opposing rolls for feeding a backing strip therebetween and over the punch'block, and a rotatable cam member for moving the punch block in the direction of the punch.

42. In a perforating machine, the combi-- nation of a perforating tool constructed and arranged to operate against a backing strip,

a pair of opposed rolls, means for intermittently actuating one of said rolls-to feed the backing member-forward and past the per- I forating tool, a cam'construoted and arranged'to move the backing member toward the tool after each movement of the backing member past the tool, and means to operate the backing member. I I

In a perforating machine,- a shaft having a cam member and a punch block rigidly connected thereto, means to restrain *theperforating tool after each movement of the shaft against rotary movement but per mit longitudinal movement thereof, a second cam member eta-operating with the first, and means forrotating said second cam member to transmit longitudinal movementthrough saidfirst cam member and said shaft to the punch block.

4A. In a perforating machine, a shaft hav- :ing' a cam-member and a punch block operati-ijely connected thereto, means for restrain ing-the punchblock against rotar movement, a second cam member cooperating -W1i '.-h "the first and means to rotate one o't said cam-members to transmit a rectilinear movemen o saidip nhbl 45. In a perforating machine, a shaft having a cam member and a punch block opera'tively connected thereto, means for restraining the punch block against rotary movement, a second cam member co-operating with the first, means to rotate one of said cam members to transmit a rectilinear movement to said punch block, and means operative after a rectilinear movement to feed a backing strip a step forward over said punch block.

46. In a perforating machine, a shaft having a cam member and a punch block operatively connected thereto, means for restraining the punch block against rotary movement, a second cam member co-operating with the first, means to rotate one of said cam members to transmit a rectilinear movement to said punch block, and means operative after a rectilinear movement to feed a backing strip a step forward over said punch block and to return said punch block to its original position.

47. In a perforating machine, a lever provided with a slot, means for uniformly oscillating said lever, a second lever provided with a slot having its length in the same general direction as that of the slot in the first lever, a member passing through said slots and bearing against the walls thereof, means for supporting said member adjustably to vary the amplitude of the oscillations transmitted thereby from the first lever to the second, a link connected to said second lever and a punch connected to said link for reciprocation thereby.

48. In a machine of the class described, a lever provided with a slot, means for oscillating said lever, a second lever provided with a slot having its length in the same general direction as that of the slot in the first lever, a member passing through said slots and bearing against the walls thereof, means for supporting said member adjust ably to vary the amplitude of the oscillation transmitted thereby from the first lever to the second,a sleeve connected to said second lever for horizontal reciprocation, and a tool carrying stem guided by said sleeve for vertical reciprocation.

49. In a machine of the class described, the combination of a perforating tool, a punch block against which the tool operates, and a work table to support the work in operative relation to the toolconstructed and arranged to be moved. into and out of work supporting position.

50. In a machine of the class described, the combination of an operating tool, and a divided work table to support the work in operative relation to the tool, they parts of said divided work table being severally pivoted to be swung simultaneously into and out of work supporting position.

51. In a machine of the class described,

. lateral groove at the end forming a slideway therein parallel to the overhanging arm, an operating member mounted for lateral feeding movement in the slideway, and means for sliding the operating member to. feed the work in alinement with the arm.

53. In a perforating machine, a frame having aligned bearings, a stem mounted for reciprocating movement in the bearings, a sleeve mounted for reciprocation in a fixed guide on the frame, an operating member mounted to slide in the sleeve to engage the work and to slide with the sleeve for feeding movement of the work, connections between thestem and the operating member to allow feeding movement of the latter, and means for reciprocating the stem and the operat ing member to treat the work. a

54. In a perforating machine, a member mounted forreciprocating movement and having a lateral slideway therein, an operating member mounted for lateral feeding movement in the slideway, a sleeve sur rounding the operating member to guide it for work-engaging movement with respect 1 to said sleeve, and means for moving the sleeve to impart feeding movement to the operating member; v

55. In a perforating machine, a frame, an operating member mounted for. reciproca- 105 tion in the frame, toggle mechanism for actuating the operating member to treat the work, a presser foot, and connections from the toggle mechanism to the presser foot for moving the latter away from the work when 1 0 the operating member'is actuated.

56. In a perforating machine, a frame, an operating member mounted for reciprocation in the frame, toggle mechanism for. actuating the operating member to treat the 115 work, a presser foot, a cam member to control the presser foot, and connections between the toggle mechanism and the cam member to actuate the presser foot.

57. In a perforating machine. a stem M363 mounted for reciprocation and having a horizontal slideway therein extending from front to rear, mechanism for reciprocating the stem, a perforating tool mounted for horizontal feeding movement in the slide- 2% way, and means for sliding the perforating tool to feed the work rearwardly away from the operator.

58. In a machineof the class described, a slidable stem, a frame'having bearings for 181 guiding said stem, a fixed guideway arranged transversely to said stem, a sleeve mounted to slide along said guideway for Work feeding movement, an operating member constructed and arranged to slide with in said sleeve for Work engaging movement, means for sliding the stem, and a connection between said stem and said operating member constructed and arranged to impart WOlk engaging movement to said operating member and allow work feeding movement transversely of the stem.

59. In a machine of the class described, in combination, a backing strip, a perforating tool, means for operating the tool to perforate a piece of stock and to penetrate, Without passing through, the backing strip, automatic means for feeding the backing strip step-by-step in the direction of its length to utilize the length of the strip, and means controlled by the machine for feeding the backing strip in a direction at right angles to its forward feed movement to use up the strip in another dimension.

60. In a step-by-step perforating machine, a backing strip, a perforating tool, means for actuating thetool to perforate a piece of stock and to penetrate, Without passing through, the backing-strip, means for actuating-the tool in another-"direction to feed the stock step-by-step over the backing strip, means for feeding the backing strip step by-step in the direction of its length to utilize the length of the strip, and automatic means for feeding the backing strip in adirection transverse to its forward feed movement to use-up the strip in another dimenv sion.

61. In a step-by-step perforating machine,

a Work table, an arm overhanging the Work table, a Workfeeding punch, and means for PERLEY R. GLAss.

feed the 

